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Finding the Fourth Proportional to 79,365.52, 118,985.86 and 54,329.68

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Solution

The fourth proportional to 79,365.52, 118,985.86 and 54,329.68 is: 81,451.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,365.52 : 118,985.86 = 54,329.68 : x
  2. Step 2: Convert to fraction form
    79,365.52/118,985.86 = 54,329.68/x
  3. Step 3: Cross multiply
    79,365.52x = 118,985.86 × 54,329.68
  4. Step 4: Simplify right side
    79,365.52x = 6,464,463,698.32
  5. Step 5: Solve for x
    x = 6,464,463,698.32/79,365.52
  6. Step 6: Final answer
    x = 81,451.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.